UML and sequence diagrams

1.1) Show how a Set-speed command flows through the refined class structure provided in the model train controller of the figure below, moving from a change on the front panel to the required changes on the train.

a. Show it in the form of a UML collaboration diagram. b. Show it in the form of a sequence diagram.

1.2) Show how an Estop command flows through the refined class structure provided in the model train controller of the figure below, moving from a change on the front panel to the required changes on the train. a. Show it in the form of a UML collaboration diagram. b. Show it in the form of a sequence diagram.

Train set Documentation only 1..t Console Train Motor interface PanelFormatter Transmitter Receiver Controller Knobs Sender Detector Pulser* Physical object FIGURE 1.18